<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        padding: 0;
        margin: 0;
        box-sizing: border-box;
      }

      :root {
        --button-height: 32px;
        --button-size: 14px;
        --button-bg: white;
        --button-active-bg: #eee;
        --border-radius: 4px;
        --color: #999;
        --border-color: #999;
        --border-hover-color: #666;
      }
    </style>
    <style></style>
  </head>
  <body>
    <div id="app">
      <r-button />
    </div>
    <script src="./src/app.js"></script>
  </body>
</html>
